BIRK · Option chain

BIRK Option Chain

Every listed BIRK strike within 25% of spot, across the next 5 expirations — calls and puts side by side with last price, volume and open interest, plus the closing bid and ask.

Open interest and pricing as of the close on 2026-09-03. Recomputed every morning before the open.

Spot

$33.95

Call open interest

11,983

Put open interest

48,130

Put/call (volume)

1.01

4,680 contracts changed hands across these expirations — 2,334 calls against 2,346 puts. Puts outtraded calls 1.01 to one.

Sep 18, 202613 days

call OI 1,820 · put OI 2,510

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	5.90 / 7.30	—	—	27.5	—	0.00 / 0.15	—	8
—	3.60 / 4.80	—	12	30	0.10	0.10 / 0.20	2	549
2.15	0.95 / 2.40	3	35	32.5	0.55	0.50 / 0.65	14	736
0.75	0.55 / 1.35	32	167	35	1.78	1.60 / 1.95	14	966
0.20	0.20 / 0.25	14	109	37.5	—	3.10 / 4.70	—	157
0.06	0.00 / 0.10	2	1,497	40	—	5.40 / 7.00	—	94
A dash means the contract did not trade — not a price of zero.

Oct 16, 202641 days

call OI 5,780 · put OI 42,073

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	5.70 / 7.40	—	1	27.5	0.26	0.00 / 0.35	2	32,042
—	3.40 / 5.90	—	51	30	0.65	0.35 / 0.70	50	245
—	1.65 / 3.80	—	42	32.5	1.45	0.80 / 1.65	6	2,755
—	0.70 / 2.25	—	84	35	—	2.10 / 3.00	—	436
0.80	0.35 / 1.20	9	199	37.5	—	3.50 / 5.00	—	1,090
0.42	0.10 / 0.75	5	5,403	40	6.40	6.00 / 6.80	3	5,505
A dash means the contract did not trade — not a price of zero.

Jan 15, 2027132 days

call OI 937 · put OI 2,572

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	6.40 / 8.90	—	17	27.5	—	0.85 / 2.05	—	366
—	4.90 / 7.40	—	50	30	2.15	1.70 / 3.00	1	382
4.65	4.00 / 6.00	1	47	32.5	3.06	1.75 / 4.30	3	322
3.42	2.95 / 4.20	1	137	35	—	2.60 / 5.00	—	1,363
—	1.05 / 3.70	—	148	37.5	—	4.80 / 8.10	—	95
1.95	1.30 / 2.40	10	538	40	—	6.70 / 8.80	—	44
A dash means the contract did not trade — not a price of zero.

Apr 16, 2027223 days

call OI 59 · put OI 45

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	7.60 / 10.10	—	—	27.5	—	1.75 / 4.00	—	4
—	6.30 / 8.20	—	—	30	3.20	2.90 / 4.90	2,250	21
—	5.00 / 7.10	—	—	32.5	—	3.70 / 5.40	—	3
4.90	4.50 / 5.60	5	40	35	—	4.90 / 7.10	—	4
—	3.20 / 4.70	—	1	37.5	—	6.00 / 8.20	—	13
3.30	2.40 / 3.90	2,250	18	40	—	7.10 / 11.00	—	—
A dash means the contract did not trade — not a price of zero.

Jan 21, 2028503 days

call OI 3,387 · put OI 930

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	9.50 / 13.00	—	222	27.5	—	3.60 / 5.00	—	13
—	8.50 / 11.70	—	1,752	30	—	4.90 / 6.00	—	212
—	6.20 / 10.50	—	121	32.5	6.30	6.10 / 7.40	1	591
7.20	7.10 / 9.50	2	393	35	—	7.60 / 8.80	—	62
—	5.70 / 7.40	—	433	37.5	—	8.90 / 10.30	—	9
—	4.80 / 6.80	—	466	40	—	10.40 / 12.00	—	43
A dash means the contract did not trade — not a price of zero.

How to read this chain

Calls sit on the left, puts on the right, and every row is one strike. The highlighted row is the strike closest to spot. Open interest is the number of contracts still outstanding at that strike — positions that exist right now. Volume is how many traded on the session shown. Open interest builds slowly and marks where positioning has accumulated; volume spikes and marks where attention went today.

Strikes with no open interest and no trades on either side are omitted, and the ladder is trimmed to within 25% of spot — the far wings are almost entirely empty and say nothing about positioning.

More on BIRK

BIRK options score BIRK gamma walls BIRK max pain BIRK IV rank BIRK put/call ratio BIRK options flow

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Educational, not investment advice. Options involve risk. Open interest is reported with a one-session lag by OCC, so these levels describe positioning as of the last settled session, not live intraday flow.